.tab {
	width: 500px;
	height: 500px;
	margin: 50px auto;
	border: 1px solid #000;
}

.tab .nav {
	height: 50px;
	border-bottom: 1px solid #000;
}

.tab .nav .item {
	float: left;
	width: 33.33%;
	height: 100%;
	text-align: center;
	line-height: 50px;
}

.tab .nav .item.current {
	background-color: #000;
	color: #fff;
}

.tab .page {
	height: 450px;
	padding: 15px;
	box-sizing: border-box;
	overflow: auto;
}

.tab .page img {
	width: 100%;
}










